火山羽流的图像分析:校正风力影响的简单校准工具

IF 2.5 Q2 Earth and Planetary Sciences
E. Snee, P. Jarvis, Riccardo Simionato, Simona Scollo, M. Prestifilippo, W. Degruyter, C. Bonadonna
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引用次数: 0

摘要

摄像机为监测和研究提供爆炸性喷发产生的火山羽流的重要信息,如羽流高度。这些图像必须经过校准才能获得准确的定量数据。然而,风的存在使校准变得复杂,因为羽流可能不再位于图像平面内,即垂直于摄像机视线的平面内。在这里,我们介绍一种简单的新工具,通过旋转图像平面使其与风向一致,来校正风对根据图像确定的火山羽流位置和高度的影响。我们通过两个案例研究(秘鲁萨班卡亚火山的火山爆发和意大利埃特纳火山的持续羽流)说明了考虑风对根据视频确定的最大羽流高度的影响的重要性。该工具可提高从火山羽流图像中提取的定量信息的准确性,对研究和监测工作都很有用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Image analysis of volcanic plumes: A simple calibration tool to correct for the effect of wind
Video cameras provide vital information on volcanic plumes from explosive eruptions, such as plume height, for monitoring and research. These images must be calibrated to get accurate quantitative data. However, the presence of wind complicates any calibration as the plume may no longer lie in the image plane, i.e. a plane perpendicular to the camera’s line-of-sight. Here, we present a simple new tool to correct for the effect of wind on the position and height of a volcanic plume as determined from imagery by rotating the image plane to be in the direction of the wind. We show the importance of accounting for the effect of wind on the maximum plume height determined from videos for two case-studies; a Vulcanian explosion from Sabancaya volcano, Peru, and a sustained plume from Mount Etna, Italy. This tool can improve the accuracy of quantitative information extracted from images of volcanic plumes, and should prove useful for both research and monitoring purposes.
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来源期刊
Volcanica
Volcanica Earth and Planetary Sciences-Geology
CiteScore
4.40
自引率
0.00%
发文量
21
审稿时长
21 weeks
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